X-y=4 and x+y=9 determine if parallel or perpendicular

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Point q is located at (-4, 6). point r is located at (8,6). what is the distance from point q to point r

Marissa can buy 3 oranges for $1.35 4 oranges for $.80 or 5 oranges for $2.25 marissa can buy 10 oranges for a price that fits this pattern or a bag of oranges for $4.25 which way costs less for 10 oranges